Roll of abrading material



Patefited Sept. l3,- I898.

v T. E. KEAV'Y. BULL 0F ABRADING MATERIAL.

(Application flled'sept. 13, 1897.)

2 Sheets-Sheet II.

(No Model.)

WI TNEE'JEEE No. 6|0,76|. Patented Sept. l3, I898.

T. E. KEAVY. I v ROLL 0F ABRADING MATERIAL.

(Application filed Sept. 13, 1897'.) (No Model.) 2 Sheets-Sheet 2.

WIT-NEEEEE INVENTEIR WQQWMZM/ llnrrnn Sterne ATEN'I union.

THOMAS E. KEAVY, OF PHILADELPHIA, PENNSYLVANIA.

ROLL OF ABRADING MATERIAL.

SPECIFICATION forming part of Letters Patent No. 610,761, dated September 13, 1898.

Original application filed January 5, 1897, Serial No. 618,036. Divided and this application filed September 13, 1897. Serial No. 650,491. (No model.)

To aZZ whom it may concern.-

Be it known that I, THOMAS E. KEAVY, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Rolls of Abrading Material; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The presentinvention relates to sand papering and bufiing machines, and more particularly to an improved roll of sandpaper, emerycloth, or other abrasive material for use in such machines, and more particularly to pro vide in convenient form rolls of abrasive material for use in machines of the type shown in Letters Patent of the United States No. 578,214, issued to me March 2, 1897. In this machine a plurality of strips are passed through the chuck from the back to the face and are then drawn in opposite directions across the face of the chuck and over the periphery thereof and clamped in such position for use.

The object of the present invention is to provide a roll of abrasivematerial which may be quickly applied to the chuck of such machine, the free ends of such material being drawn through the aperture in the chuck as required for use, and when the roll of abrasive material has been used up a new roll can be quickly placed in the machine.

To the above end the present invention consists of a roll of abrasive material constructed and arranged as will be hereinafter fully described and claimed.

The present application constitutes a division of an application filed by me January 5, 1897, Serial No. 618,036.

Figure 1 shows in perspective the preferred form of the present invention. Fig. 2 shows a similar construction, omitting the roll or spool shown in Fig. 1.

In the following specification similar letters of reference will be employed to designate like parts in the drawings.

In the drawings, A A represent strips of any suitable abrasive material such as sandpaper, emcry-cloth, or the likeand A a spool or arbor upon which the strips A A are rolled for use. The spool or arbor A may be of any ordinary or usual construction, and it is provided with an aperture or bore 0L to receive the shaft, spindle, or other supporting device with which the chuck of the machine shall be provided.

The strips A A, preferably two, are first cut into suitable lengths which can be conveniently carried in the chuck and are preferably placed with their abrasive faces a a adjacent each other and rolled or coiled upon the spool or arbor A. By this means the abrasive surfaces of the strips A A will be protected when not in use, and When the ends are drawn through the aperture or slot in the chuck and drawn in opposite directions across the face of the chuck the abrasive surfaces a of the ends of the strips A A will be exposed for use. In the illustrated embodiment of the present invention I interpose a protective strip 13 of non abrasive material between the strips A A in order to keep the abrasive surfaces at a of strips A A out of contact with each other when wound or rolled upon the spool or arbor A, and thus remove all possibility of the abrasive surfaces at a becoming damaged by rubbing against each other.

In use the spool or arbor A, with the strips A A thereon, is mounted in the body of the chuck, and the free ends of strips A A (and the strip B, if it be used) are drawn through the slot or aperture in the chuck and the strips AAturnedin opposite directions across the face of the chuck, exposing the abrasive surfaces a a for use, in which position they are clamped or otherwise held, the protective strip B being torn off or removed close to the face of the chuck. WVhen the ends have be come worn in use, sections of the abrasive strips may be unrolled and exposed for use, the worn sections being torn off andremoved, such operation being continued until the entire roll has been exhausted.

It will be noted that by my invention I provide in convenient form the abrasive material, which can be quickly placed in the chuck for use, and that it presents a neat and compact package for packing and shipping. It will be further noted that the abrasive surfaces of the strips will be fully covered and protected until exposed for use.

It is of course obvious that instead of rolling the abrasive material upon the spool or arbor A it can be coiled up Without such spool, leaving a bearing or aperture similar to the bore a at the center of such roll, Whereby the roll can be slipped on a shaft or other support in the chuck of the machine.

It may of course be desirable in some cases to place the strips of abrasive material A one upon the other, with their abrasive faces a outside, and to coil, wind, or roll them in this manner, and such construction I consider to be within the scope of the present invention.

In conforming the ends of the abrasive material to the periphery of the disk upon which they are used they may be simply crimped or folded to remove the fullness, or the ends may be split or slit, as shown at (F, and lapped over each other.

Having fully described my invention, I claim as new and desire to protect by Letters Patent of the United States- 1. A roll of abrasive material, comprising two strips of abrasive material arranged with their abrasive surfaces toward each other and rolled or coiled into a compact roll, substantially as described.

2. A roll of abrasive material comprising two strips of abrasive material arranged with their abrasive surfaces toward each other and a protective strip of non-abrasive material interposed between the abrasive surfaces, the whole rolled or coiled into a compact roll, substantially as described.

3. A roll of abrasive material comprising a spool or arbor, and two strips of abrasive material arranged with their abrasive surfaces toward each other, and closely rolled or coiled upon the spool or arbor, substantially as described.

In testimony whereof Iaffix my signature in presence of two Witnesses.

THOMAS E. KEAVY.

Witnesses:

H. G. VAN COURT, D. KELLEHER. 

